http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103668363-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2958f68f11e5de691204a5edf966afef |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K1-02 |
| filingDate | 2013-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00631007664ef2bc8258334897d85e58 |
| publicationDate | 2014-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103668363-A |
| titleOfInvention | Circuit board containing ferrous metal composite layer |
| abstract | The invention relates to a circuit board containing a ferrous metal composite layer. The invention aims to solve the problem of overhigh precipitation proportion of gold by combination of other metals and gold assisted by very small amounts of additives, and can maintain favorable conductivity, so that the product quality is satisfactory. The circuit board comprises a substrate and a coating, wherein the coating is in an electric contact position; the electric contact position is put in an electroplating solution and electroplated in a weakly-acidic environment; and the electroplating solution comprises cyanate ions, gold ions, a chelator, iron ion salts and borate ions. In the solution, the iron content is 1-5 g/L, the borate content is 10-30 g/L, the chelator content is 50-100 g/L, and the gold iron content accounts for 30-60 wt% of the iron ion content. The solution comprises the following components: gold cyanate, EDTA-Fe, ferric citrate or ferric sulfate, iron borate, EDTA and boric acid. The solution also contains an organic acid for regulating the pH value to 6-7 (weakly-acidic). |
| priorityDate | 2013-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.